Kap: Add calculation support to size input

[jkeussen]

macOS version: 10.15.3
Kap version: 3.0.1

Steps to reproduce

1. Record video
2. In the size input fields I've tried to do math but it's not working. Example: width: 1000, height: 600. If I want to make this 500x300, I have to manually type that but in other apps you can often type 1000/2 and it'll resize automatically.

Current behaviour

The size input can not take math commands, such as /, *, +, -.

Expected behaviour

I'd like to make simple calculations such as:
1000*0.5 = 500
1000/4 = 250
300+50 = 350
500-100 = 400
etc.

Workaround

Manually type in the value I want, which isn't too bad but I think this will be a nice improvement

I just started using the app and it's great so far! I just wanted to add that this small improvement would be appreciated 🙏. If you need any additional information, let me know!

[karaggeorge]

Hey @jkeussen

I think we implemented that in #769 which was released as part of 3.0.1 which is the version you're on. I just tested it and it worked on macOS version 10.14, can't test on Catalina. Can someone else see if they can reproduce on 10.15?

One note is that you need to blur away from the input for it to actually make the calculations

[jkeussen]

@karaggeorge You're right, I see it now and it works on 10.15. Earlier I didn't blur the field, but tried to hit Enter on my keyboard. Maybe it's worth adding on Enter key press? Thanks for the quick reply 🙏

[jkeussen]

I'll close this in the meantime since it's not a missing feature nor a bug.

[karaggeorge]

@jkeussen that is a good idea. Coming soon: #789 😄

[jsejcksn]

I think this is actually a bug. I haven't looked at the source yet, but the behavior seems like the input values are being parsed on change events after a debounce rather than waiting for blur. Here's a screen capture in which I never press Enter, and only use Tab when you see the focus moving to different inputs:

Software | Version
:---:|:---:
Kap | 3.0.1
macOS | 10.15.3

[karaggeorge]

@jsejcksn

For those inputs it is also triggered on a timer (debounced). Also I'm not sure those support calculations. I think the calculations were only added to the Editor ones. If desired and of-value we can add them there as well